Keysight Technologies Option 503 Service Manual page 166

RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
High Band #2 signal path utilizes a high band mixer internal to the A13
Front End Assembly for input frequencies from 13.6 GHz to 26.5 GHz.
Failures from 13.6 GHz − 26.5 GHz will most likely be caused by the A13
RF Front End Assembly. If the failure is amplitude related, proper
adjustments such as frequency response and the YTF Preselector adjust
should be performed first before changing the A13 RF Front End Assembly.
In order to gain access to the front end components, remove the side chassis
(1) by removing the 16 screws (2). See
Figure 4-6 Remove the Side Chassis
166
Figure 4-6.
N9030A PXA Signal Analyzer Service Guide